blood orange tree has not bloomed

Bought a blood orange tree in the spring. It has almost doubled in height but not bloomed. When will it begin to produce fruit? It is potted in full sun. I live in southern Alabama. If I don't water it daily, it looks very wilty, so I keep watering it. I know it says weekly but it's soooo hot here. I would say the tree is about 6 feet tall now and I had some caterpillars that started to eat the leaves but got rid of them. It looks like a healthy tree. Please help! I want some yummy oranges.